Display screen or portion thereof with an icon



The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

The sole FIGURE is a front view of a display screen or portion thereof with an icon showing my new design.

The broken line showing of the display screen is for environmental purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with an icon, as shown and described. 